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<div class="title">/data/users/hoss/faiss/IndexIVFFlat.h</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) Facebook, Inc. and its affiliates.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * This source code is licensed under the MIT license found in the</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// -*- c++ -*-</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#ifndef FAISS_INDEX_IVF_FLAT_H</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define FAISS_INDEX_IVF_FLAT_H</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &lt;unordered_map&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;IndexIVF.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">/** Inverted file with stored vectors. Here the inverted file</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * pre-selects the vectors to be searched, but they are not otherwise</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * encoded, the code array just contains the raw float entries.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html">   24</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structfaiss_1_1IndexIVFFlat.html">IndexIVFFlat</a>: <a class="code" href="structfaiss_1_1IndexIVF.html">IndexIVF</a> {</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlat.html">IndexIVFFlat</a> (</div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;            <a class="code" href="structfaiss_1_1Index.html">Index</a> * <a class="code" href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">quantizer</a>, <span class="keywordtype">size_t</span> <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, <span class="keywordtype">size_t</span> nlist_,</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;            <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> = METRIC_L2);</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">    /// same as add_with_ids, with precomputed coarse quantizer</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment"></span>    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#aea729c3d8c70bdd93f8e413e834851a4">add_core</a> (<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> * x, <span class="keyword">const</span> <span class="keywordtype">long</span> *xids,</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;                   <span class="keyword">const</span> <span class="keywordtype">long</span> *precomputed_idx);</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment">    /// implemented for all IndexIVF* classes</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"></span>    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a5f7356766632d3ce2838f285aa6b8e76">add_with_ids</a>(<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a2c445db1ccbad852dad17e60e0fac950">encode_vectors</a>(<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;                        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> *list_nos,</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;                        uint8_t * codes) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <a class="code" href="structfaiss_1_1InvertedListScanner.html">InvertedListScanner</a> *<a class="code" href="structfaiss_1_1IndexIVFFlat.html#a05cbcc239916559b29b1eb1943b00440">get_InvertedListScanner</a> (<span class="keywordtype">bool</span> store_pairs)</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">    /** Update a subset of vectors.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">     * The index must have a direct_map</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment">     *</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">     * @param nv     nb of vectors to update</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">     * @param idx    vector indices to update, size nv</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">     * @param v      vectors of new values, size nv*d</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">     */</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a2adc0b0002c32ddc01aec4ab96dd659f">update_vectors</a> (<span class="keywordtype">int</span> nv, <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> *idx, <span class="keyword">const</span> <span class="keywordtype">float</span> *v);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a1267faf361fc3831ddafe7abc51f0ba2">reconstruct_from_offset</a> (<span class="keywordtype">long</span> list_no, <span class="keywordtype">long</span> offset,</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;                                  <span class="keywordtype">float</span>* recons) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlat.html">IndexIVFFlat</a> () {}</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;};</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html">   62</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html">IndexIVFFlatDedup</a>: <a class="code" href="structfaiss_1_1IndexIVFFlat.html">IndexIVFFlat</a> {</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment">    /** Maps ids stored in the index to the ids of vectors that are</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">     *  the same. When a vector is unique, it does not appear in the</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">     *  instances map */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">   67</a></span>&#160;    std::unordered_multimap &lt;idx_t, idx_t&gt; <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html">IndexIVFFlatDedup</a> (</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;            <a class="code" href="structfaiss_1_1Index.html">Index</a> * <a class="code" href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">quantizer</a>, <span class="keywordtype">size_t</span> <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>, <span class="keywordtype">size_t</span> nlist_,</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;            <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> = METRIC_L2);</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">    /// also dedups the training set</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment"></span>    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a24002a8c3f12aa2784833c14b13b427e">train</a>(idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">    /// implemented for all IndexIVF* classes</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment"></span>    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#ae1d5f41f4987f4e02938738436f082bf">add_with_ids</a>(idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a88f84494a02e8ceab79982bcbcab4fa5">search_preassigned</a> (idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, idx_t k,</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                             <span class="keyword">const</span> idx_t *<a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a>,</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                             <span class="keyword">const</span> <span class="keywordtype">float</span> *centroid_dis,</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;                             <span class="keywordtype">float</span> *distances, idx_t *labels,</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                             <span class="keywordtype">bool</span> store_pairs,</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                             <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IVFSearchParameters.html">IVFSearchParameters</a> *params=<span class="keyword">nullptr</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                             ) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;    <span class="keywordtype">long</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#aae53833bb1e4041358cd4e5407d6a296">remove_ids</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a>&amp; sel) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="comment">    /// not implemented</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment"></span>    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#acb4f1350039546f5001c5fc36ac0fb2d">range_search</a>(</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        idx_t n,</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <span class="keywordtype">float</span> radius,</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <a class="code" href="structfaiss_1_1RangeSearchResult.html">RangeSearchResult</a>* result) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">    /// not implemented</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment"></span>    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a0782b04472858d993ad4c0ffc81b1844">update_vectors</a> (<span class="keywordtype">int</span> nv, idx_t *idx, <span class="keyword">const</span> <span class="keywordtype">float</span> *v) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;<span class="comment">    /// not implemented</span></div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment"></span>    <span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#adedda3a8e10704acc5639b7f6aa065f7">reconstruct_from_offset</a> (<span class="keywordtype">long</span> list_no, <span class="keywordtype">long</span> offset,</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                                  <span class="keywordtype">float</span>* recons) <span class="keyword">const override</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html">IndexIVFFlatDedup</a> () {}</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;};</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;} <span class="comment">// namespace faiss</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00090">IndexIVF.h:90</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a24002a8c3f12aa2784833c14b13b427e"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a24002a8c3f12aa2784833c14b13b427e">faiss::IndexIVFFlatDedup::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdoc">also dedups the training set </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00243">IndexIVFFlat.cpp:243</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_adedda3a8e10704acc5639b7f6aa065f7"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#adedda3a8e10704acc5639b7f6aa065f7">faiss::IndexIVFFlatDedup::reconstruct_from_offset</a></div><div class="ttdeci">void reconstruct_from_offset(long list_no, long offset, float *recons) const override</div><div class="ttdoc">not implemented </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00471">IndexIVFFlat.cpp:471</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a2c445db1ccbad852dad17e60e0fac950"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a2c445db1ccbad852dad17e60e0fac950">faiss::IndexIVFFlat::encode_vectors</a></div><div class="ttdeci">void encode_vectors(idx_t n, const float *x, const idx_t *list_nos, uint8_t *codes) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00082">IndexIVFFlat.cpp:82</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c"><div class="ttname"><a href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">faiss::Index::assign</a></div><div class="ttdeci">void assign(idx_t n, const float *x, idx_t *labels, idx_t k=1)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00034">Index.cpp:34</a></div></div>
<div class="ttc" id="structfaiss_1_1IDSelector_html"><div class="ttname"><a href="structfaiss_1_1IDSelector.html">faiss::IDSelector</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00054">AuxIndexStructures.h:54</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00024">IndexIVFFlat.h:24</a></div></div>
<div class="ttc" id="structfaiss_1_1IVFSearchParameters_html"><div class="ttname"><a href="structfaiss_1_1IVFSearchParameters.html">faiss::IVFSearchParameters</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00060">IndexIVF.h:60</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_ad3f0d3071f987baabbdd3da4500c87ea"><div class="ttname"><a href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_ae1d5f41f4987f4e02938738436f082bf"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#ae1d5f41f4987f4e02938738436f082bf">faiss::IndexIVFFlatDedup::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdoc">implemented for all IndexIVF* classes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00270">IndexIVFFlat.cpp:270</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a88f84494a02e8ceab79982bcbcab4fa5"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a88f84494a02e8ceab79982bcbcab4fa5">faiss::IndexIVFFlatDedup::search_preassigned</a></div><div class="ttdeci">void search_preassigned(idx_t n, const float *x, idx_t k, const idx_t *assign, const float *centroid_dis, float *distances, idx_t *labels, bool store_pairs, const IVFSearchParameters *params=nullptr) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00326">IndexIVFFlat.cpp:326</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a5f7356766632d3ce2838f285aa6b8e76"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a5f7356766632d3ce2838f285aa6b8e76">faiss::IndexIVFFlat::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdoc">implemented for all IndexIVF* classes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00036">IndexIVFFlat.cpp:36</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a1267faf361fc3831ddafe7abc51f0ba2"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a1267faf361fc3831ddafe7abc51f0ba2">faiss::IndexIVFFlat::reconstruct_from_offset</a></div><div class="ttdeci">void reconstruct_from_offset(long list_no, long offset, float *recons) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00226">IndexIVFFlat.cpp:226</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a2adc0b0002c32ddc01aec4ab96dd659f"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a2adc0b0002c32ddc01aec4ab96dd659f">faiss::IndexIVFFlat::update_vectors</a></div><div class="ttdeci">virtual void update_vectors(int nv, idx_t *idx, const float *v)</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00190">IndexIVFFlat.cpp:190</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_acb4f1350039546f5001c5fc36ac0fb2d"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#acb4f1350039546f5001c5fc36ac0fb2d">faiss::IndexIVFFlatDedup::range_search</a></div><div class="ttdeci">void range_search(idx_t n, const float *x, float radius, RangeSearchResult *result) const override</div><div class="ttdoc">not implemented </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00456">IndexIVFFlat.cpp:456</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedListScanner_html"><div class="ttname"><a href="structfaiss_1_1InvertedListScanner.html">faiss::InvertedListScanner</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00272">IndexIVF.h:272</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a0782b04472858d993ad4c0ffc81b1844"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a0782b04472858d993ad4c0ffc81b1844">faiss::IndexIVFFlatDedup::update_vectors</a></div><div class="ttdeci">void update_vectors(int nv, idx_t *idx, const float *v) override</div><div class="ttdoc">not implemented </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00465">IndexIVFFlat.cpp:465</a></div></div>
<div class="ttc" id="structfaiss_1_1RangeSearchResult_html"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html">faiss::RangeSearchResult</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00031">AuxIndexStructures.h:31</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00061">Index.h:61</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_a3cf99e2ee92b8558a066f821efab95d5"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">faiss::Level1Quantizer::quantizer</a></div><div class="ttdeci">Index * quantizer</div><div class="ttdoc">quantizer that maps vectors to inverted lists </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00032">IndexIVF.h:32</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_aae53833bb1e4041358cd4e5407d6a296"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#aae53833bb1e4041358cd4e5407d6a296">faiss::IndexIVFFlatDedup::remove_ids</a></div><div class="ttdeci">long remove_ids(const IDSelector &amp;sel) override</div><div class="ttdoc">Dataset manipulation functions. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00381">IndexIVFFlat.cpp:381</a></div></div>
<div class="ttc" id="namespacefaiss_html_afd12191c638da74760ff397cf319752c"><div class="ttname"><a href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a></div><div class="ttdeci">MetricType</div><div class="ttdoc">Some algorithms support both an inner product version and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00044">Index.h:44</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html">faiss::IndexIVFFlatDedup</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00062">IndexIVFFlat.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a05cbcc239916559b29b1eb1943b00440"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a05cbcc239916559b29b1eb1943b00440">faiss::IndexIVFFlat::get_InvertedListScanner</a></div><div class="ttdeci">InvertedListScanner * get_InvertedListScanner(bool store_pairs) const override</div><div class="ttdoc">get a scanner for this index (store_pairs means ignore labels) </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00166">IndexIVFFlat.cpp:166</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_aea729c3d8c70bdd93f8e413e834851a4"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#aea729c3d8c70bdd93f8e413e834851a4">faiss::IndexIVFFlat::add_core</a></div><div class="ttdeci">virtual void add_core(idx_t n, const float *x, const long *xids, const long *precomputed_idx)</div><div class="ttdoc">same as add_with_ids, with precomputed coarse quantizer </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00041">IndexIVFFlat.cpp:41</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a1ff220494d504dd806e5daf290ec0e7a"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">faiss::IndexIVFFlatDedup::instances</a></div><div class="ttdeci">std::unordered_multimap&lt; idx_t, idx_t &gt; instances</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00067">IndexIVFFlat.h:67</a></div></div>
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